In various DebOps roles you can find named ports. They are defined in
/etc/services using debops.etc_services role which manages them using
Ansible's assemble module. To avoid collisions between various services we
list here custom ports that are set for applications and services that don't
have specified system ports by default.

You can find a list of ports used throughout the DebOps project by running
command:

debops-defaults | grep '_port:'

This should output list of all variables that define port numbers in various
roles and are available in role defaults, and thus can be overridden by Ansible
inventory.